Four homes went up in flames and collapsed in charred heaps Tuesday after a natural gas line exploded in an inferno that raged for at least an hour, melting guardrails and pavement on a swath of Interstate 77.

Five other homes had extensive external damage, and several people were treated for smoke inhalation, but authorities said there were no fatalities and all residents had been accounted for.

"We've been very fortunate," said Gov. Earl Ray Tomblin, who toured the damage then briefed the media. "They were just lucky enough not to be home."

Most were at work. One man had just left to go hunting, he said.
State Police spokesman Sgt. Michael Baylous said a slight risk of a secondary explosion remained, so people who had initially been told to stay inside nearby homes were later urged to evacuate.